<template>
  <el-container class="home-container">
  <!---->
    <el-header class="">
      <div>
        <img src="../assets/heima.png">
        <span>电商管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <el-aside :width="isCollapse?'64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!--左侧边栏-->
        <el-menu  background-color="#333744"  text-color="#fff" active-text-color="#409bff" :unique-opened="true"  :collapse="isCollapse" :collapse-transition="false" :router="true" :default-active="activePath">
        <!--一级菜单-->
              <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
                <template slot="title"> 
                  <i :class="iconsObj[item.id]"></i>
                  <span>{{item.authName}}</span>
                </template>
                <!--二级菜单-->
                <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
                  <template slot="title">
                    <i class="el-icon-menu"></i>
                    <span>{{subItem.authName}}</span>
                  </template>
                </el-menu-item>        
             </el-submenu>             
            </el-menu>



      </el-aside>
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
  export default{
    data (){
      return {
        menulist:[],
        iconsObj:{
          '125':'iconfont icon-user',
          '103':'iconfont icon-tijikongjian',
          '101':'iconfont icon-shangpin',
          '102':'iconfont icon-danju',
          '145':'icon-baobiao iconfont'
        },
        //是否折叠
        isCollapse: false,
        //激活的连接地址
        activePath:''
      }
    },
    created() {
      this.getMenuList()
      this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
      logout(){
        window.sessionStorage.clear()
        this.$router.push('/login')
      },
      async getMenuList(){
        const{ data:res} = await this.$http.get('menus')
        if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.menulist = res.data
      },
      toggleCollapse(){
        this.isCollapse = !this.isCollapse;
      },
      //保存链接的激活状态
      saveNavState(activePath){        
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath = activePath
      }
    }
  }
</script>
<style lang="less" scoped>
.el-header {
  background:#373d41;
  display:flex;
  justify-content:space-between;
  padding-left:0;
  align-items:center;
  color:#fff;
  font-size:20px;
  > div {
    display:flex;
    align-items:center;

  }
}
.el-aside {
  background:#333744;
  .el-menu{
    border-right:none;
  }
}
.el-main{
  background:#eaedf1;
}
.home-container{
  height: 100%;
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background:#4a5064;
  font-size:10px;
  line-height:24px;
  color:#fff;
  text-align:center;
  letter-spacing:0.2em;
  cursor:pointer;
}
</style>